Key Features Eliminates rifle cant to improve long-range shooting accuracy Quick clamp-on installation directly to the scope tube High-visibility bubble level for fast alignment confirmation Lightweight aluminum construction built for field durability Low-profile design minimizes interference while shooting Available for both 30mm and 34mm scope tubes Description Low-profile anti-cant bubble level that mounts to your scope tube and keeps the rifle perfectly vertical, preventing horizontal point-of-impact shift at distance. Specs Product Type Anti-Cant Bubble Level Compatibility Fits 30mm and 34mm scope tubes Function Helps maintain proper rifle alignment and reduces cant error Mounting Style Clamp-on scope tube attachment Level Type High-visibility bubble indicator Construction Lightweight aluminum body